WO2024038390 - A CONTACT LENS WITH A HYDROGEL COATING THEREON
National phase entry:
Publication Number
WO/2024/038390
Publication Date
22.02.2024
International Application No.
PCT/IB2023/058229
International Filing Date
16.08.2023
Title **
[English]
A CONTACT LENS WITH A HYDROGEL COATING THEREON
[French]
LENTILLE DE CONTACT AVEC UN REVÊTEMENT D'HYDROGEL SUR CELLE-CI
Applicants **
ALCON INC.
Inventors
CHANG, Frank
HOLLAND, Troy Vernon
MOY, Thomas M.
Priority Data
63/371,660
17.08.2022
US
Application details
| Total Number of Claims/PCT | * |
| Number of Independent Claims | * |
| Number of Priorities | * |
| Number of Multi-Dependent Claims | * |
| Number of Drawings | * |
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International Searching Authority |
EPO
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| Recordal of a Change of the Applicant's Name/Address |
Change of Applicant's Name and Address
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| Type of Assignment |
The Standard Agent's Assignment
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| Applicant's Legal Status |
Legal Entity
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| Entry into National Phase under |
Chapter I
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| Patent Delivery |
Send the Letters Patent by Courier
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| Translation |
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* The data is based on automatic recognition. Please verify and amend if necessary.
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Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 2282 | |
| EPO | Filing, Examination, Granting | 9162 | |
| Japan | Filing, Examination, Granting | 2170 | |
| South Korea | Filing, Examination, Granting | 2060 | |
| USA | Filing, Examination, Granting | 4740 |
Total:
20,414
The term for entry into the National Phase has expired. This quotation is for informational purposes only
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Abstract[English]
The invention is related to a cost-effective method for making a coated contact lens having a hydrogel coating thereon. A method of the invention involves heating a contact lens precursor having carboxylic acid groups on and/or near its surface in an aqueous solution in the presence of a hydrophilic copolymer that comprises monomeric units of (a) at least one epoxy-containing vinylic monomer, (b) at least one amino-containing vinylic monomer having a primary or secondary amino group, (c) at least one polyethyleneglycol-containing vinylic monomer, and (d) at least one phosphorylcholine-containing vinylic monomer, at a temperature from about 100°C to about 140°C for at least 30 minutes, thereby forming a hydrogel coating on the contact lens precursor. Such a method can be advantageously implemented directly in a sealed lens package during autoclave.[French]
L'invention concerne un procédé rentable de fabrication d'une lentille de contact revêtue sur laquelle est appliqué un revêtement d'hydrogel. Un procédé de l'invention consiste à chauffer un précurseur de lentille de contact ayant des groupes acide carboxylique sur et/ou à proximité de sa surface dans une solution aqueuse en présence d'un copolymère hydrophile qui comprend des unités monomères de (a) au moins un monomère vinylique contenant de l'époxy, (b) au moins un monomère vinylique contenant un groupe amino ayant un groupe amino primaire ou secondaire, (c) au moins un monomère vinylique contenant du polyéthylèneglycol, et (d) au moins un monomère vinylique contenant de la phosphorylcholine, à une température d'environ 100 °C à environ 140 °C pendant au moins 30 minutes, formant ainsi un revêtement d'hydrogel sur le précurseur de lentille de contact. Un tel procédé peut être avantageusement mis en œuvre directement dans un boîtier de lentille étanche pendant l'autoclave.